There might be a story of a sea monster in the dark waters. It was said to be huge, with long tentacles that could wrap around an entire ship. The monster was known to lurk in the deep, and when ships passed over its lair, it would rise up suddenly, causing the ship to rock violently and often leading to the ship's doom.
The history and superstitions associated with the dark waters play a big role. There are tales of ships that have disappeared without a trace, of sailors who have gone mad. These stories have been passed down and become part of the fabric of 'dark waters scary stories'. They create an atmosphere of dread because they make us think that the same could happen to the characters in the stories, and in a sense, to us if we were in a similar situation.
I'm not sure specifically as I haven't read 'Dark Waters' in detail. But it might include stories about environmental pollution, corporate cover - ups, and the fight for justice in relation to water contamination issues.
The 'Vampires of the Black Sea' is a somewhat famous story. It tells of a group of vampires that were banished to the depths of the Black Sea by a powerful sorcerer. They are said to rise during the blood moon and attack any ships that pass over their watery prison. Sailors have reported seeing pale figures emerging from the waves during these times.
One main theme could be mystery. Dark waters often symbolize the unknown, and stories set in such an environment might revolve around uncovering secrets.
There are often brave adventurers. These are the ones who are not afraid to explore the areas around dark waters, whether it's a murky lake or a deep ocean bay.